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--- a/src/qtgui/spell_w.h
+++ b/src/qtgui/spell_w.h
@@ -53,7 +53,11 @@
 public slots:
     virtual void doExpand();
     virtual void wordChanged(const QString&);
+#if (QT_VERSION < 0x040000)
     virtual void textDoubleClicked();
+#else
+    virtual void textDoubleClicked(int, int);
+#endif
     virtual void modeSet(int);
 
 signals: